<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .icon{
            width: 19px;
            height: 18px;
            background: url(images/qq-wx.png) no-repeat;
        }
        .wx{
            width: 19px;
            height: 19px;
            background: url(images/qq-wx.png) no-repeat;
            background-position: -19px 0;
        }
        .user{
            width: 38pox;
            height: 38px;
            background: url(images/pwd-icons-new.png)no-repeat;
            background-position: 0 -96px;
        }
        .user:hover{
            background-position: 0 -48px;
        }
        .pwd{
            width: 38px;
            height: 38px;
            background: url(images/pwd-icons-new.png) no-repeat;
            background-position: -48px -96px;
        }
    </style>
</head>
<body>
   <div class="icon">

   </div>
   <div class="wx">

   </div>
   <div class="user">

   </div>
   <div class="pwd">

   </div> 
</body>
</html>